Papers by Author: Tian Wei Qian

Abstract: Several novel organic material were Prepared by condensation between p-aminophenyl methyl keton, 3,5-Dicholoro-4-aminophenyl methyl keton and 5-Dibromo-4-aminophenyl methyl keton and pyrrole. The reaction condition has been optimized. The structure was characterized by 1HNMR and elemental analysis.

Abstract: Zero-valent iron (ZVI) nanoparticles are prepared by wet chemical method, unlike conventional methods, we applied a water-soluble dextrin、CMC and starch in the preparation. The starch serves as a stabilizer and dispersant that prevents the resultant nanoparticles from agglomeration, and characterized by XRD、SEM and USP. Compare the dispersion of particles and particle size in progress of reducing. According to the characterization results, the nanoparticles can be dispersed more efficiently, maintained the activity of it owned and kept the stability longer with the dispersing agent. Based on the results obtained, the starch as a dispersion agent on the preparation of Zero-valent iron (ZVI) nanoparticles is an ideal approach.

Abstract: Laboratory batch and column experiments were conducted to investigate the feasibility of using a new class of stabilized zero-valent iron (ZVI) nanoparticles for in situ reductive immobilization of Re (VI) in water and in a sandy loam soil. Column experiments indicated that the stabilized ZVI nanoparticles are highly deliverable in the soil column. The stabilized ZVI nanoparticles may serve as a highly soil-dispersible and effective agent for in situ reductive immobilization of rhenium soils, groundwater, or industrial wastes.